I have converted my cgpa to %age according the formula HEC has devised
Formula for conversion of CGPA into percentage of marks on the scale of 4.00
CGPA..............% Marks
3.63-4.00............90-100
3.25-3.62........80-89 my cgpa (3.34/4.00) falls in this range.
2.88-3.24............70-79
2.50-2.87............60-69
1.80-2.49............50-59
1.00-1,79............40-49
0.00-099............Below 40
Formula for conversion of CGPA into percentage of marks on the scale of 5.00
CGPA ...............% Marks
4.63-5.00..............90-100
4.25-4.62..............80-89
3.88-4.24..............70-79
3.50-3.87..............60-69
2.80-3.49..............50-59
2.00-2.79..............40-49
1.00-1.99..............Below 40
I calculated using simple ratio and proportion.
3.25 : 80 :: 3.34 : x
3.25x = 80 x 3.34
x = 267.2 / 3.25
x = 82.2.
Check: